小学二年级上册加减加乘混合运算口算

小学二年级上册加减加乘混合运算口算36+3×2=67+2×7=50+2×2=12+7×8=8×2+21=3×4+36=3×6+68=4×6+68=7×5+23=7×3-11=7×7-11=7×3-19